The following scatter plot shows hypothetical data on the relationship between homework time (hours/week) and GPA in high school students. If you aren't sure what different types of correlation look like, you may find it useful to try out Guess the Correlation.
A reasonable guess for the correlation coefficient between homework and GPA is:
Select one:
a.
0.55
b.
0.90
c.
0.25
d.
-0.65